Cohort study of vibration-induced white finger among Japanese forest workers over 30 years

Futatsuka, Makoto; Ueno, Tomomi; Sakurai, Tadayoshi

doi:10.1007/bf00683119

Cited by 16 publications

(22 citation statements)

References 5 publications

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“…The results of this follow-up study are consistent with those of previous investigations showing that VWF may be reversible in chain-saw operators [7,12,18,20]. It has been reported that the prevalence of VWF in Finnish chain-saw operators has gradually decreased from 40% in 1972 to 5% in 1990 [12].…”

Section: Discussionsupporting

confidence: 94%

“…It has been reported that the prevalence of VWF in Finnish chain-saw operators has gradually decreased from 40% in 1972 to 5% in 1990 [12]. A retrospective cohort study of 1551 Japanese forestry workers showed a reduction of the prevalence of VWF from 31% in 1973 to 17% in 1988 [7]. In both investigations a decrease in the incidence of VWF was also reported among active forestry workers.…”

Section: Discussionmentioning

confidence: 72%

“…Subjective improvements in the extent and frequency of ®nger-blanching attacks or complete remissions of vascular complaints have been reported in both active and retired forestry workers [7,11,12,16,18,20]. Investigations of vibration-exposed worker groups other than chain-saw operators have produced contrasting results.…”

Section: Introductionmentioning

confidence: 95%

“…Some epidemiologic studies have shown that symptoms of vibration-induced white ®nger (VWF) may reverse if vibration exposure is reduced or stopped [5,7,15,16,18]. Subjective improvements in the extent and frequency of ®nger-blanching attacks or complete remissions of vascular complaints have been reported in both active and retired forestry workers [7,11,12,16,18,20].…”

Section: Introductionmentioning

confidence: 98%

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A prospective study of the cold response of digital vessels in forestry workers exposed to saw vibration

Bovenzi

Alessandrini

Mancini³

et al. 1998

International Archives of Occupational and Environmental Health

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Section: Discussionsupporting

confidence: 94%

Section: Discussionmentioning

confidence: 72%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 98%

See 2 more Smart Citations

A prospective study of the cold response of digital vessels in forestry workers exposed to saw vibration

Bovenzi

Alessandrini

Mancini³

et al. 1998

International Archives of Occupational and Environmental Health

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show abstract

“…The neurological symptoms of HAVS and CTS are very alike and often impossible to tell apart (4). Though it may be somewhat unspecific, it is important to investigate the impact of HAV on neurological symptoms as it appears that sensorineural symptoms or injuries are more resistant to improvement than are vascular disorders after cessation of exposure to HAV (24,25).…”

Section: Limitationsmentioning

confidence: 99%

A prospective cohort study investigating an exposure–response relationship among vibration-exposed male workers with numbness of the hands

Edlund¹,

Burström²,

Gerhardsson³

et al. 2013

Scand J Work Environ Health

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A prospective cohort study investigating an exposure-response relationship among vibration-exposed male workers with numbness of the hands by Edlund M, Burström L, Gerhardsson L, Lundström R, Nilsson T, Sandén H, Hagberg M This study on hand-arm-vibration (HAV) exposed workers spanned 16 years; exposure dose was assessed for each individual; and the study may contribute to knowledge about an exposure-response relationship between neurological symptoms and HAV exposure. Furthermore, to our knowledge, there are no other studies reporting incidence of numbness in hands among HAV-exposed workers or how it affects work performance. Affiliation 203Original article Scand J Work Environ Health. 2014;40(2):203-209. doi:10.5271/sjweh.3386 A prospective cohort study investigating an exposure-response relationship among vibration-exposed male workers with numbness of the hands Objective The aim of this study was to investigate the exposure-response relationship of hand-arm vibration (HAV) exposure to neurological symptoms (numbness) of the hand in a cohort of vibration-exposed workers. MethodsThe baseline cohort comprised 241 office and manual workers with and without exposure to HAV.Numbness (the symptom or event) in the hand was assessed for all subjects at baseline and follow-ups after 5, 10, and 16 years. The workers were stratified into quartiles with no exposure in the first quartile and increasing intensity of exposure in quartiles 2-4 (groups 1-3). Data analysis was performed using survival analysis (time-to-event). Information on cumulative exposure and years of exposure to event was collected via questionnaires. Measurements were performed in accordance with the International Organization for Standardization (ISO) 5349-1. ResultsThe hazard ratio (HR) of risk of event (numbness) differed statistically significantly between the nonexposed group (group 0) and the two higher exposure groups (groups 2 and 3). There was also a significant ratio difference between the lowest exposure group (group 1) and the two higher groups. The ratio for group 1 was 1.77 [95% confidence interval (95% CI) 0.96-3.26] compared with 3.78 (95% CI 2.15-6.62) and 5.31 (95% CI 3.06-9.20) for groups 2 and 3, respectively. ConclusionThe results suggest a dose-response relationship between vibration exposure and numbness of the hands. This underlines the importance of keeping vibration levels low to prevent neurological injury to the hands.

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Quantitatively measured tremor in hand-arm vibration-exposed workers

Edlund

Burström

Hagberg

et al. 2014

Int Arch Occup Environ Health

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Objectives The aim of the present study was to investigate the possible increase in hand tremor in relation to hand-arm vibration (HAV) exposure in a cohort of exposed and unexposed workers.MethodsParticipants were 178 male workers with or without exposure to HAV. The study is cross-sectional regarding the outcome of tremor and has a longitudinal design with respect to exposure. The dose of HAV exposure was collected via questionnaires and measurements at several follow-ups. The CATSYS Tremor Pen® was used for measuring postural tremor. Multiple linear regression methods were used to analyze associations between different tremor variables and HAV exposure, along with predictor variables with biological relevance.ResultsThere were no statistically significant associations between the different tremor variables and cumulative HAV or current exposure. Age was a statistically significant predictor of variation in tremor outcomes for three of the four tremor variables, whereas nicotine use was a statistically significant predictor of either left or right hand or both hands for all four tremor variables.ConclusionsIn the present study, there was no evidence of an exposure–response association between HAV exposure and measured postural tremor. Increase in age and nicotine use appeared to be the strongest predictors of tremor.

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Cohort study of vibration-induced white finger among Japanese forest workers over 30 years

Cited by 16 publications

References 5 publications

A prospective study of the cold response of digital vessels in forestry workers exposed to saw vibration

A prospective study of the cold response of digital vessels in forestry workers exposed to saw vibration

A prospective cohort study investigating an exposure–response relationship among vibration-exposed male workers with numbness of the hands

Quantitatively measured tremor in hand-arm vibration-exposed workers

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